This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 121 |
| 3 | 801 |
| 4 | 3712 |
| 5 | 13599 |
| 6 | 42109 |
| 7 | 114713 |
| 8 | 282273 |
| 9 | 639165 |
| 10 | 1350228 |
| 11 | 2689169 |
| 12 | 5091414 |
| 13 | 9224755 |
| 14 | 16081503 |
| 15 | 27096217 |
| 16 | 44293439 |
| 17 | 70470225 |
| 18 | 109418622 |
| 19 | 166193601 |
| 20 | 247432316 |
| 21 | 361730919 |
| 22 | 520085521 |
| 23 | 736404249 |
| 24 | 1028097709 |
| 25 | 1416755525 |